Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5263358 | Closed-loop air-fuel ratio controller | Marc B. Center, Norman Maasshoff | 1993-11-23 |
| 5051909 | Method and means for determining exhaust backpressure in a crankcase scavenged two-stoke engine | Douglas E. Trombley, Dennis Montville | 1991-09-24 |
| 4958516 | Method and means for determining air mass in a crankcase scavenged two-stroke engine | Steven Stiles, Paul E. Reinke | 1990-09-25 |
| 4920789 | Method and means for determining air mass in a crankcase scavenged two-stroke engine | Douglas E. Trombley, Kenneth J. Buslepp | 1990-05-01 |
| 4920790 | Method and means for determining air mass in a crankcase scavenged two-stroke engine | Steven Stiles, Paul E. Reinke | 1990-05-01 |